Why is the ninth month called September?
Old English spreawlian "move convulsively," with cognates in the Scandinavian languages and North Frisian spraweli, probably ultimately from PIE root *sper- "to strew" (see sprout (v.)). Meaning "to spread or stretch in a careless manner" is attested from 1540s; of things, from 1745. Related: Sprawled; sprawling.
1719, from sprawl (v.); meaning "straggling expansion of built-up districts into surrounding countryside" is from 1955.
Spreading overdevelopment of urban areas:The state can put the brakes on senseless sprawl (1980s+)